Abstract
This article is an extension of the periodic imperfect maintenance model in the literature. The purpose of this research is to investigate the influence on the optimal periodic maintenance policy after considering the failure replacement in the last period of preventive maintenance (PM). The specific maintenance decisions for a repairable system are: when to replace the system, when to repair the system; whether to conduct PM or keep the system operating. A partially periodic PM policy is proposed incorporating the costs of minimal repair, PM, failure replacement, and preventive replacement. The average cost rate for the proposed policy is obtained. Finally, the optimal parameters of the maintenance policy can be calculated using the cost rate function and the numerical comparisons of different policies are provided to demonstrate the effect of failure replacement.
為了要防止設備因可靠度太低所引起之不預期失效或突發設備故障 , 除了平常例行之預防維護保養之外 , 另一種方式為使用含有當機成本之失效置換作為故障維修之可能方案。 延續過去文獻中週期性不完美維護模式的研究 , 本篇論文主要探討於週期維護模式的最後一個週期內 , 考慮使用失效置換對最佳週期維護政策之影響。 因此對仍在操作中系統需要考慮的維護對策為何時應採行預防保養、 何時應採行預防置換 ; 對已經失效的系統則考慮何時採行最小修理、 何時採行失效置換。 針對設備維修之長期平均成本中包含了最小修理成本、 預防維護成本、 失效及預防置換成本下 , 提出一項最佳部份週期性之預防維護政策。 並於論文最後以數值分析方法對本研究所提之最佳維護政策與過去文獻之長期平均成本加以比較 , 說明採行失效置換之效益。
(*聯絡人: [email protected])
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(*聯絡人: [email protected])